Electric oven



J. 0. GONZALEZ. EIIECTRIC OVEN.

APPLICATION FILED AUG.l6| 1920.

1,404,361, q Patented Jan. 24,1922.

a maento'c Juan Ortega unzafez AZ/Jrny.

JUAN onrr'EGA GONZALEZ, OF MEXICO, MEXICO.

ELECTRIC OVEN.

Specification of Letters Patent. Patented Jan, 24 1922.

Application filed August 16, 1920. Serial No. 403,809.

T 0 all whom it may concern. v

Be it known that I, JUAN ORTEGA GON- ZiiLnz, citizen of the United Mexican States, residing at Mexico city, Federal District, Mexico, have invented certain new and useful Improvements in Electric Ovens, of which the following is a specification.

This invention refers to an electric oven, the principal object being to provide an improved oven in which the heat radiation from the oven is eliminated, such oven having an outside wooden box, and also having between the oven itself and the wooden box a heat insulation formed by air, asbestos, mica or other insulating material of asimilar character.

Another object of the invention is to so dispose the electric heating elements in the interior upper and lower portion of the oven that a more directly applied action on the article to be baked is obtained.

Still another object of the invention consists in providing the oven with a small win dow as a means of admitting light to the inside of the oven, so as to be able to inspect from the outside the baking or drying process, without the necessity of frequently opening the oven, thus eliminating the con- With reference to the drawing: (1) shows the skeleton framework made of wooden strips which form open frames, said framework being lined on the inside five sides.

with metal sheets (2) and on the outside with wooden staves" nailed to the framework (1).

The door 1) of wood, on which is nailed a frame of wooden strips (5), covered with a metal sheet (6), has in its center an opening (7) for a lamp (8) covered with glass on the inside, and in addition a small window (9) the said opening extending through the parts (5) and (6) as represented in Fig. 1. A wire (10) is connected to a button (11) to turn the light on or off, which will permit the inspection of the interior of the oven; the wire (10) being supplied with current from the main feed wire connected at the back of the oven by means of a contact, not'shown, which also supplies the electric current to the coiled heating wires (12). These wires (12) are held within the individual channel-irons (13), which constitute the electric heating grate, each one of the triangular channel-irons (13) being lined with asbestos or mica (1 1), on the inside, and passing through the sheet metal sides (2) of the oven, from which they are insulated by means of the bushings (15) piercing the walls (2).

The radiator resistance wires (12) pass through the bushings (15) and connect with the wires (16) on the outside of the metallic lining (2) of the oven.

In the example shown the oven has four lower andfour upper heating rods or channel-irons (13), and about midway in the interior of the oven the supporting bars 17 are mounted in flared perforations (18) formed in the side walls of the oven on which bars the moulds or pans are placed. It will be seen that the heat will radiate from the heating rods in a well distributed manner, from the bottom up as well as from top to bottom, and that each time it is necessary to inspect the contents of the oven, all that has to be done is to turn on the light (8) and look through the small window (9), without the necessity of opening the door except when the baking is finished.

Having thus described my invention what I claim is:

1. An. electric oven, comprising a nonmetallic outer framework, an inner lining of sheet metal, and an intermediate non-metallic skeleton framework to opposite sides of which the outer framework and the lining are secured, said intermediate framework providing spaces for the reception of a heatinsulating medium; in combination with heating elements disposed within the oven, and means for supplying electric current thereto.

2. An electric oven according to claim 1, in which both the outer framework and the intermediate framework are constructed of projecting at opposite ends beyond the ends of the channel iron; and current supply means connected with the ends of said resistance elements,

In testimony whei'eof I have effixed my signature,

JUAN ORTEGA ONZALEZ. 

